:root {
  --blue: #008bac;
  --blue-dark: #036f89;
  --ink: #101820;
  --grey: #373a36;
  --warm: #ada29a;
  --green: #5f8f16;
  --red: #b3261e;
  --amber: #b06a12;
  --line: #e2e6ea;
  --bg: #eef1f4;
  --card: #ffffff;
  --soft: #f5f7f9;
  --blue-bg: #e9f5f9;
  --red-bg: #fbeceb;
  --amber-bg: #fdf4e7;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  background: var(--ink);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 18px/1.6 Calibri, "Segoe UI", system-ui, -apple-system, Roboto, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

h1, h2, h3 {
  font-family: Cambria, Georgia, "Times New Roman", serif;
  font-weight: 700;
  letter-spacing: 0.1px;
}

a { color: var(--blue); }

/* ---- top bar ---- */
header.bar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: #ffffff;
  border-bottom: 1px solid var(--line);
  padding: 8px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

header.bar .logo-block {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
}

header.bar .logo {
  height: 22px;
  width: auto;
  display: block;
}

header.bar .tag {
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--warm);
  line-height: 1;
}

button.type-chip {
  font-size: 12px;
  font-weight: 700;
  color: #036f89;
  background: #e9f5f9;
  border: 1px solid #bfe0ea;
  border-radius: 999px;
  padding: 4px 11px;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
}

button.type-chip:hover {
  background: #d6edf5;
}

/* ---- main content area ---- */
main {
  padding: 16px 16px 84px;
  max-width: 600px;
  margin: 0 auto;
}

/* suppress browser focus ring on programmatic focus (view.focus()) */
main:focus { outline: none; }

/* ---- bottom nav ---- */
nav.tabs {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 30;
  background: var(--card);
  border-top: 1px solid var(--line);
  display: flex;
  padding-bottom: env(safe-area-inset-bottom);
}

nav.tabs button {
  flex: 1;
  border: none;
  background: none;
  cursor: pointer;
  padding: 9px 4px 8px;
  font: 600 12px Calibri, sans-serif;
  color: var(--warm);
  border-top: 3px solid transparent;
  margin-top: -1px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  min-height: 56px;
}

nav.tabs button .ic {
  display: block;
  width: 22px;
  height: 22px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

nav.tabs button[aria-current="true"] {
  color: var(--blue-dark);
  border-top-color: var(--blue);
}

nav.tabs button[aria-current="true"] .ic { stroke: var(--blue); }

/* ---- cards ---- */
.card {
  display: flex;
  align-items: center;
  gap: 14px;
  text-align: left;
  width: 100%;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px 15px;
  cursor: pointer;
  box-shadow: 0 1px 2px rgba(16, 24, 32, 0.04);
  margin-bottom: 12px;
}

.card:hover {
  box-shadow: 0 2px 6px rgba(16, 24, 32, 0.10);
}

.card .rail {
  width: 4px;
  align-self: stretch;
  border-radius: 4px;
  background: var(--blue);
  flex-shrink: 0;
}

.card .body { flex: 1; }

.card .body .t {
  font-family: Cambria, Georgia, serif;
  font-weight: 700;
  font-size: 18px;
  color: var(--ink);
  display: block;
}

.card .body .d {
  font-size: 15px;
  color: var(--grey);
  margin-top: 2px;
  display: block;
}

.card .chev {
  color: var(--warm);
  font-size: 22px;
  font-weight: 700;
}

/* ---- panels ---- */
.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 15px 16px 4px;
  margin-bottom: 14px;
}

/* ---- note boxes ---- */
.note {
  border-radius: 11px;
  padding: 12px 14px;
  margin: 12px 0;
  font-size: 15px;
  border: 1px solid;
}

.note .h {
  font-weight: 700;
  display: block;
  margin-bottom: 3px;
  font-family: Cambria, Georgia, serif;
}

.note.info { background: var(--blue-bg); border-color: #c3e2eb; color: #074a5b; }
.note.info .h { color: var(--blue-dark); }

.note.warn { background: var(--amber-bg); border-color: #f0dcb4; color: #5c3d0a; }
.note.warn .h { color: var(--amber); }

.note.stop { background: var(--red-bg); border-color: #f0c4c0; color: #5c130f; }
.note.stop .h { color: var(--red); }

/* ---- tables ---- */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 8px 0 12px;
  font-size: 15px;
}

th, td {
  border: 1px solid var(--line);
  padding: 9px 10px;
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--soft);
  font-weight: 700;
}

td.c, th.c { text-align: center; }

/* ---- section headings ---- */
h2.sec {
  font-size: 22px;
  margin: 2px 0 4px;
  color: var(--ink);
}

h2.sec + .kicker {
  margin: 0 0 14px;
  color: var(--warm);
  font-size: 12.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h3 {
  font-size: 17px;
  color: var(--grey);
  margin: 20px 0 8px;
}

p { margin: 9px 0; }

ol, ul { margin: 8px 0 12px; padding-left: 22px; }
li { margin: 6px 0; }

/* ---- pill badges ---- */
.pill {
  display: inline-block;
  font-weight: 700;
  border-radius: 6px;
  padding: 1px 8px;
  font-size: 14px;
}

.pass { background: #e7f2d6; color: var(--green); }
.fail { background: #fbe3e1; color: var(--red); }

/* ---- stub section ---- */
.stub-msg {
  color: var(--warm);
  font-size: 15px;
  text-align: center;
  padding: 32px 16px;
}

/* ---- test detail back button ---- */
.back-btn {
  border: none;
  background: none;
  color: var(--blue);
  font: 700 16px Calibri, sans-serif;
  cursor: pointer;
  padding: 4px 0 14px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.back-btn::before {
  content: "\2039";
  font-size: 20px;
  line-height: 1;
}

/* ---- dialog / type selector ---- */
dialog#typeDialog {
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px;
  max-width: 340px;
  width: 90%;
  box-shadow: 0 4px 24px rgba(16, 24, 32, 0.18);
  background: var(--card);
}

dialog#typeDialog::backdrop {
  background: rgba(16, 24, 32, 0.4);
}

dialog#typeDialog h3 {
  margin-top: 0;
  color: var(--ink);
  font-size: 18px;
}

.dialog-group {
  margin-bottom: 16px;
}

.dialog-group label {
  display: block;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--grey);
  margin-bottom: 6px;
}

.dialog-options {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.dialog-options button {
  text-align: left;
  padding: 10px 14px;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  background: var(--card);
  color: var(--ink);
  font: 600 16px Calibri, sans-serif;
  cursor: pointer;
}

.dialog-options button[aria-pressed="true"] {
  border-color: var(--blue);
  background: var(--blue-bg);
  color: var(--blue-dark);
}

.dialog-close {
  display: block;
  width: 100%;
  margin-top: 16px;
  padding: 11px;
  border: none;
  border-radius: 10px;
  background: var(--blue);
  color: #fff;
  font: 700 16px Calibri, sans-serif;
  cursor: pointer;
}

.dialog-close:hover { background: var(--blue-dark); }

/* ---- segmented control ---- */
.seg-ctrl {
  display: flex;
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 4px;
  gap: 4px;
  margin: 0 0 20px;
}

.seg-btn {
  flex: 1;
  padding: 9px 10px;
  border: none;
  border-radius: 9px;
  background: transparent;
  color: var(--grey);
  font: 600 16px Calibri, sans-serif;
  cursor: pointer;
  text-align: center;
  transition: background 0.15s, color 0.15s;
}

.seg-btn.seg-active {
  background: var(--card);
  color: var(--blue-dark);
  box-shadow: 0 1px 3px rgba(16, 24, 32, 0.12);
}

/* ---- stepper ---- */
.stepper {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 22px 20px 18px;
}

.step-progress {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--warm);
  margin: 0 0 8px;
}

.step-heading {
  font-family: Cambria, Georgia, serif;
  font-size: 26px;
  font-weight: 700;
  color: var(--ink);
  margin: 0 0 14px;
  line-height: 1.2;
}

.step-body {
  font-size: 19px;
  line-height: 1.65;
  color: var(--grey);
  margin: 0 0 18px;
}

.step-diagram {
  margin: 4px 0 20px;
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px;
  text-align: center;
}

.step-diagram svg {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
}

.loading {
  color: var(--warm);
  font-size: 15px;
  text-align: center;
  padding: 20px 0;
}

/* ---- optional step figure (Task 6: instrument photos) ---- */
.step-figure {
  margin: 4px 0 20px;
  text-align: center;
}

.step-figure img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto 6px;
  border-radius: 8px;
}

.step-figure figcaption {
  font-size: 13px;
  color: var(--warm);
  line-height: 1.4;
}

.step-nav {
  display: flex;
  gap: 12px;
  margin-top: 6px;
}

.step-btn {
  flex: 1;
  padding: 15px;
  border: none;
  border-radius: 12px;
  font: 700 18px Calibri, sans-serif;
  cursor: pointer;
  text-align: center;
}

.step-btn.back-step {
  background: var(--soft);
  color: var(--grey);
  border: 1px solid var(--line);
}

.step-btn.next-step {
  background: var(--blue);
  color: #fff;
}

.step-btn.next-step:hover { background: var(--blue-dark); }

.step-btn.done-step {
  background: var(--green);
  color: #fff;
}

.step-btn-spacer {
  flex: 1;
}

/* ---- test summary ---- */
.test-summary {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px 18px 8px;
}

.test-summary h3 {
  font-size: 20px;
  margin-top: 0;
  color: var(--ink);
}

.test-summary p {
  font-size: 17px;
  line-height: 1.65;
  color: var(--grey);
}

/* ---- floor highlight ---- */
.floor-current {
  background: var(--blue-bg);
  border: 1px solid #c3e2eb;
  border-radius: 10px;
  padding: 12px 15px;
  font-size: 16px;
  color: var(--blue-dark);
  margin-bottom: 14px;
}